A motor has coils with a resistance of 3012 and operates from a voltage of 240 V. When the motor is operating at its maximum speed, the back emf is 145V. Find the current in the coils a) when the motor is first turned on b) when the motor has reached maximum speed c) If the current in the motor is 6.0A at some instant, what is the back emf at that time?
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A motor has coils with a resistance of 3012 and operates from a voltage of 240 V. When the motor is...
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